Mikanda yoyandama ndi mipira yomwe imatha kuyandama pamadzi.Ndi zotuwa zotuwa, zoonda ndi zapabowo, ndi zopepuka kulemera.The chochuluka kachulukidwe ndi 720kg/m3 (lolemera), 418.8kg/m3 (kuwala), ndi tinthu kukula pafupifupi 0.1 mm, pamwamba chatsekedwa ndi yosalala, madutsidwe matenthedwe ndi yaing'ono, ndi refractoriness ndi ≥1610 ℃.Kapangidwe kake ka mikanda yoyandamayo ndi silicon dioxide ndi aluminium oxide.Ili ndi zinthu zambiri monga tinthu tating'onoting'ono, tobowo, kulemera kopepuka, mphamvu yayikulu, kukana kuvala, kukana kutentha kwambiri, kutchinjiriza kwamafuta, kutchinjiriza ndi retardant lawi.Amagwiritsidwa ntchito kwambiri m'modzi mwazinthu zopangira mafakitale a refractory.